Pretty much every GIG on my sample hard drive (note that an "instrument" in GIG-speak can be single an articulations of a sampled musical instrument):

* Various samples that I've collected over the last decade that I've used to build GIG instruments from. Some from free sources other from sample disks I've bought over the years.* Free GIG instruments I've collected. (But the only orchestral oriented instruments are percussion.)* Commercial GIG instruments from SampleTekk, PMI, VSL and Westgate (and an odd instrument from Sonic Implants).

One of my goals with the development of a SFZ engine is to be able to reprogram Kirk Hunter's libraries for it (I currently only own his concert strings for Kontakt). I.e. imagine having the $89 Saphire orchestra library available for LinuxSampler!